Modeling of Soil Spring Perpendicular to Pipe Axis by Horizontal Loading Test of Buried Pipe

DOI Web Site 5 References
  • OGATA Taro
    Department of Civil Engineering, Graduate School of Engineering, Kobe University
  • KUWATA Yasuko
    Department of Civil Engineering, Graduate School of Engineering, Kobe University
  • OMURO Hideki
    Department of Civil Engineering, Graduate School of Engineering, Kobe University
  • HASEGAWA Nobuhiro
    JFE Engineering Co.

Bibliographic Information

Other Title
  • 埋設管水平方向載荷実験による管軸直角方向地盤ばねのモデル化

Abstract

<p>In this study, horizontal loading tests were conducted on small-diameter buried pipes to evaluate soil spring characteristics for design and to propose an estimation formula for the subgrade reaction modulus (SRM). In the horizontal loading tests, steel pipes were buried in compacted wet sand in a soil tank. Steel rods were fixed to the ends of the pipes and loaded statically from the outside. The relationship between load and displacement was obtained. The relationship was approximated by the Weibull function, and the dependence of the SRM on the normalized displacement, on the loading width, and on the burial depth were evaluated respectively. In addition, the yielding displacement based on the maximum subgrade reaction and elasto-plastic model, and the relationship between the yielding SRM and the elastic SRM were clarified as the soil spring characteristics considering soil yielding. These results were used to construct a correction equation for the SRM obtained from the plate loading tests, and the validity of the correction equation was verified by multiple regression analysis.</p>

Journal

References(5)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top